/*********************************************************************
 * Copyright (C) 2002 Andrew Khan
 * <p>
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * <p>
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * <p>
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ***************************************************************************/

package jxl.read.biff;

import jxl.Range;
import jxl.Sheet;
import jxl.biff.IntegerHelper;
import jxl.biff.RecordData;
import jxl.biff.SheetRangeImpl;

/**
 * A merged cells record for a given sheet
 */
public class MergedCellsRecord extends RecordData {
    /**
     * The ranges of the cells merged on this sheet
     */
    private Range[] ranges;

    /**
     * Constructs this object from the raw data
     *
     * @param t the raw data
     * @param s the sheet
     */
    MergedCellsRecord(Record t, Sheet s) {
        super(t);

        byte[] data = getRecord().getData();

        int numRanges = IntegerHelper.getInt(data[0], data[1]);

        ranges = new Range[numRanges];

        int pos = 2;
        int firstRow = 0;
        int lastRow = 0;
        int firstCol = 0;
        int lastCol = 0;

        for (int i = 0; i < numRanges; i++) {
            firstRow = IntegerHelper.getInt(data[pos], data[pos + 1]);
            lastRow = IntegerHelper.getInt(data[pos + 2], data[pos + 3]);
            firstCol = IntegerHelper.getInt(data[pos + 4], data[pos + 5]);
            lastCol = IntegerHelper.getInt(data[pos + 6], data[pos + 7]);

            ranges[i] = new SheetRangeImpl(s, firstCol, firstRow,
                    lastCol, lastRow);

            pos += 8;
        }
    }

    /**
     * Gets the ranges which have been merged in this sheet
     *
     * @return the ranges of cells which have been merged
     */
    public Range[] getRanges() {
        return ranges;
    }
}







